/Engine/Source/Runtime/Analytics/AnalyticsET/Public/IAnalyticsProviderET.h
Range checking is not done, similar toTArray. Use GetDefaultAttributeCount() first!
one attribute of the default attributes so we don't have to copy the entire attribute array.
[FAnalyticsEventAttribute](API\Runtime\Analytics\FAnalyticsEventAttribute) GetDefaultEventAttribute ( int AttributeIndex ) const